19418187874 has 16 divisors (see below), whose sum is σ = 30452060160. Its totient is φ = 9269122720.

The previous prime is 19418187863. The next prime is 19418187931. The reversal of 19418187874 is 47878181491.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381154 + ... + 429085.

It is an arithmetic number, because the mean of its divisors is an integer number (1903253760).

Almost surely, 2^19418187874 is an apocalyptic number.

19418187874 is a deficient number, since it is larger than the sum of its proper divisors (11033872286).

19418187874 is a wasteful number, since it uses less digits than its factorization.

19418187874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810785.

The product of its digits is 3612672, while the sum is 58.

The spelling of 19418187874 in words is "nineteen billion, four hundred eighteen million, one hundred eighty-seven thousand, eight hundred seventy-four".